1 // SPDX-License-Identifier: MIT
5 #include "platforms/platforms.h"
6 #include "input/input.h"
9 #include "platforms/amiga/Gayle.h"
10 #include "platforms/amiga/amiga-registers.h"
11 #include "platforms/amiga/rtg/rtg.h"
12 #include "platforms/amiga/hunk-reloc.h"
13 #include "platforms/amiga/piscsi/piscsi.h"
14 #include "platforms/amiga/piscsi/piscsi-enums.h"
15 #include "platforms/amiga/net/pi-net.h"
16 #include "platforms/amiga/net/pi-net-enums.h"
17 #include "gpio/ps_protocol.h"
31 #include <sys/ioctl.h>
34 #include <sys/types.h>
37 #define KEY_POLL_INTERVAL_MSEC 5000
39 unsigned char read_ranges;
40 unsigned int read_addr[8];
41 unsigned int read_upper[8];
42 unsigned char *read_data[8];
43 unsigned char write_ranges;
44 unsigned int write_addr[8];
45 unsigned int write_upper[8];
46 unsigned char *write_data[8];
47 address_translation_cache code_translation_cache = {0};
49 int kb_hook_enabled = 0;
50 int mouse_hook_enabled = 0;
51 int cpu_emulation_running = 1;
53 uint8_t mouse_dx = 0, mouse_dy = 0;
54 uint8_t mouse_buttons = 0;
55 uint8_t mouse_extra = 0;
57 extern uint8_t gayle_int;
58 extern uint8_t gayle_ide_enabled;
59 extern uint8_t gayle_emulation_enabled;
60 extern uint8_t gayle_a4k_int;
61 extern volatile unsigned int *gpio;
62 extern volatile uint16_t srdata;
63 extern uint8_t realtime_graphics_debug;
64 extern uint8_t rtg_on;
65 uint8_t realtime_disassembly, int2_enabled = 0;
66 uint32_t do_disasm = 0, old_level;
67 uint32_t last_irq = 8, last_last_irq = 8;
69 uint8_t end_signal = 0;
71 char disasm_buf[4096];
73 #define KICKBASE 0xF80000
74 #define KICKSIZE 0x7FFFF
76 int mem_fd, mouse_fd = -1, keyboard_fd = -1;
85 extern m68ki_cpu_core m68ki_cpu;
86 extern int m68ki_initial_cycles;
87 extern int m68ki_remaining_cycles;
89 #define M68K_SET_IRQ(i) old_level = CPU_INT_LEVEL; \
90 CPU_INT_LEVEL = (i << 8); \
91 if(old_level != 0x0700 && CPU_INT_LEVEL == 0x0700) \
92 m68ki_cpu.nmi_pending = TRUE;
93 #define M68K_END_TIMESLICE m68ki_initial_cycles = GET_CYCLES(); \
96 #define M68K_SET_IRQ m68k_set_irq
97 #define M68K_END_TIMESLICE m68k_end_timeslice()
100 #define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
102 #define DEBUG_EMULATOR
103 #ifdef DEBUG_EMULATOR
109 // Configurable emulator options
110 unsigned int cpu_type = M68K_CPU_TYPE_68000;
111 unsigned int loop_cycles = 300, irq_status = 0;
112 struct emulator_config *cfg = NULL;
113 char keyboard_file[256] = "/dev/input/event1";
115 uint64_t trig_irq = 0, serv_irq = 0;
116 uint16_t irq_delay = 0;
117 unsigned int amiga_reset=0, amiga_reset_last=0;
118 unsigned int do_reset=0;
120 void *ipl_task(void *args) {
121 printf("IPL thread running\n");
122 uint16_t old_irq = 0;
126 value = *(gpio + 13);
128 if (!(value & (1 << PIN_IPL_ZERO))) {
151 amiga_reset=(value & (1 << PIN_RESET));
152 if(amiga_reset!=amiga_reset_last)
154 amiga_reset_last=amiga_reset;
157 printf("Amiga Reset is down...\n");
163 printf("Amiga Reset is up...\n");
168 /*if (gayle_ide_enabled) {
169 if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
170 //get_ide(0)->drive[0].intrq = 0;
179 NOP NOP NOP NOP NOP NOP NOP NOP
180 //NOP NOP NOP NOP NOP NOP NOP NOP
181 //NOP NOP NOP NOP NOP NOP NOP NOP
182 /*NOP NOP NOP NOP NOP NOP NOP NOP
183 NOP NOP NOP NOP NOP NOP NOP NOP
184 NOP NOP NOP NOP NOP NOP NOP NOP*/
193 if (mouse_hook_enabled) {
194 get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra);
197 if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
198 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
199 printf("REGA: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_A2), m68k_get_reg(NULL, M68K_REG_A3), \
200 m68k_get_reg(NULL, M68K_REG_A4), m68k_get_reg(NULL, M68K_REG_A5), m68k_get_reg(NULL, M68K_REG_A6), m68k_get_reg(NULL, M68K_REG_A7));
201 printf("REGD: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2), m68k_get_reg(NULL, M68K_REG_D3), \
202 m68k_get_reg(NULL, M68K_REG_D4), m68k_get_reg(NULL, M68K_REG_D5), m68k_get_reg(NULL, M68K_REG_D6), m68k_get_reg(NULL, M68K_REG_D7));
203 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
209 if (cpu_emulation_running)
210 m68k_execute(loop_cycles);
215 last_irq = ((read_reg() & 0xe000) >> 13);
216 if (last_irq != last_last_irq) {
217 last_last_irq = last_irq;
218 M68K_SET_IRQ(last_irq);
222 if (gayleirq && int2_enabled) {
223 write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
224 last_last_irq = last_irq;
235 last_last_irq = last_irq;
242 usleep(1000000); // 1sec
244 // while(amiga_reset==0);
245 // printf("CPU emulation reset.\n");
248 if (mouse_hook_enabled && (mouse_extra != 0x00)) {
249 // mouse wheel events have occurred; unlike l/m/r buttons, these are queued as keypresses, so add to end of buffer
250 switch (mouse_extra) {
253 queue_keypress(0xfe, KEYPRESS_PRESS, PLATFORM_AMIGA);
257 queue_keypress(0xff, KEYPRESS_PRESS, PLATFORM_AMIGA);
261 // dampen the scroll wheel until next while loop iteration
266 goto stop_cpu_emulation;
271 printf("[CPU] End of CPU thread\n");
275 void *keyboard_task() {
276 struct pollfd kbdpoll[1];
278 char c = 0, c_code = 0, c_type = 0;
279 char grab_message[] = "[KBD] Grabbing keyboard from input layer\n",
280 ungrab_message[] = "[KBD] Ungrabbing keyboard\n";
282 printf("[KBD] Keyboard thread started\n");
284 // because we permit the keyboard to be grabbed on startup, quickly check if we need to grab it
285 if (kb_hook_enabled && cfg->keyboard_grab) {
286 printf(grab_message);
287 grab_device(keyboard_fd);
290 kbdpoll[0].fd = keyboard_fd;
291 kbdpoll[0].events = POLLIN;
294 kpollrc = poll(kbdpoll, 1, KEY_POLL_INTERVAL_MSEC);
295 if ((kpollrc > 0) && (kbdpoll[0].revents & POLLHUP)) {
296 // in the event that a keyboard is unplugged, keyboard_task will whiz up to 100% utilisation
297 // this is undesired, so if the keyboard HUPs, end the thread without ending the emulation
298 printf("[KBD] Keyboard node returned HUP (unplugged?)\n");
302 // if kpollrc > 0 then it contains number of events to pull, also check if POLLIN is set in revents
303 if ((kpollrc <= 0) || !(kbdpoll[0].revents & POLLIN)) {
307 while (get_key_char(&c, &c_code, &c_type)) {
308 if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
310 printf("[KBD] Keyboard hook enabled.\n");
311 if (cfg->keyboard_grab) {
312 grab_device(keyboard_fd);
313 printf(grab_message);
315 } else if (kb_hook_enabled) {
316 if (c == 0x1B && c_type) {
318 printf("[KBD] Keyboard hook disabled.\n");
319 if (cfg->keyboard_grab) {
320 release_device(keyboard_fd);
321 printf(ungrab_message);
324 if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled && last_irq != 2) {
331 // pause pressed; trigger nmi (int level 7)
332 if (c == 0x01 && c_type) {
333 printf("[INT] Sending NMI\n");
337 if (!kb_hook_enabled && c_type) {
338 if (c && c == cfg->mouse_toggle_key) {
339 mouse_hook_enabled ^= 1;
340 printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
341 mouse_dx = mouse_dy = mouse_buttons = mouse_extra = 0;
344 cpu_emulation_running ^= 1;
345 printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
348 realtime_graphics_debug ^= 1;
349 printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
353 //m68k_pulse_reset();
354 printf("CPU emulation reset.\n");
357 printf("Quitting and exiting emulator.\n");
362 realtime_disassembly ^= 1;
364 printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
367 int r = get_mapped_item_by_address(cfg, 0x08000000);
369 printf("Dumping first 16MB of mapped range %d.\n", r);
370 FILE *dmp = fopen("./memdmp.bin", "wb+");
371 fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
375 if (c == 's' && realtime_disassembly) {
378 if (c == 'S' && realtime_disassembly) {
387 printf("[KBD] Keyboard thread ending\n");
388 if (cfg->keyboard_grab) {
389 printf(ungrab_message);
390 release_device(keyboard_fd);
395 void stop_cpu_emulation(uint8_t disasm_cur) {
398 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
399 printf("REGA: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_A2), m68k_get_reg(NULL, M68K_REG_A3), \
400 m68k_get_reg(NULL, M68K_REG_A4), m68k_get_reg(NULL, M68K_REG_A5), m68k_get_reg(NULL, M68K_REG_A6), m68k_get_reg(NULL, M68K_REG_A7));
401 printf("REGD: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2), m68k_get_reg(NULL, M68K_REG_D3), \
402 m68k_get_reg(NULL, M68K_REG_D4), m68k_get_reg(NULL, M68K_REG_D5), m68k_get_reg(NULL, M68K_REG_D6), m68k_get_reg(NULL, M68K_REG_D7));
403 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
404 realtime_disassembly = 1;
407 cpu_emulation_running = 0;
412 static volatile unsigned char maprom;
414 void sigint_handler(int sig_num) {
416 //cpu_emulation_running = 0;
419 printf("Received sigint %d, exiting.\n", sig_num);
425 if (cfg->platform->shutdown) {
426 cfg->platform->shutdown(cfg);
429 printf("IRQs triggered: %lld\n", trig_irq);
430 printf("IRQs serviced: %lld\n", serv_irq);
435 int main(int argc, char *argv[]) {
437 //const struct sched_param priority = {99};
439 // Some command line switch stuffles
440 for (g = 1; g < argc; g++) {
441 if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
443 printf("%s switch found, but no CPU type specified.\n", argv[g]);
446 cpu_type = get_m68k_cpu_type(argv[g]);
449 else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
451 printf("%s switch found, but no config filename specified.\n", argv[g]);
454 cfg = load_config_file(argv[g]);
457 else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
459 printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
462 strcpy(keyboard_file, argv[g]);
468 printf("No config file specified. Trying to load default.cfg...\n");
469 cfg = load_config_file("default.cfg");
471 printf("Couldn't load default.cfg, empty emulator config will be used.\n");
472 cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
474 printf("Failed to allocate memory for emulator config!\n");
477 memset(cfg, 0x00, sizeof(struct emulator_config));
482 if (cfg->cpu_type) cpu_type = cfg->cpu_type;
483 if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
486 cfg->platform = make_platform_config("none", "generic");
487 cfg->platform->platform_initial_setup(cfg);
490 if (cfg->mouse_enabled) {
491 mouse_fd = open(cfg->mouse_file, O_RDWR | O_NONBLOCK);
492 if (mouse_fd == -1) {
493 printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
494 cfg->mouse_enabled = 0;
497 * *-*-*-* magic numbers! *-*-*-*
498 * great, so waaaay back in the history of the pc, the ps/2 protocol set the standard for mice
499 * and in the process, the mouse sample rate was defined as a way of putting mice into vendor-specific modes.
500 * as the ancient gpm command explains, almost everything except incredibly old mice talk the IntelliMouse
501 * protocol, which reports four bytes. by default, every mouse starts in 3-byte mode (don't report wheel or
502 * additional buttons) until imps2 magic is sent. so, command $f3 is "set sample rate", followed by a byte.
504 uint8_t mouse_init[] = { 0xf4, 0xf3, 0x64 }; // enable, then set sample rate 100
505 uint8_t imps2_init[] = { 0xf3, 0xc8, 0xf3, 0x64, 0xf3, 0x50 }; // magic sequence; set sample 200, 100, 80
506 if (write(mouse_fd, mouse_init, sizeof(mouse_init)) != -1) {
507 if (write(mouse_fd, imps2_init, sizeof(imps2_init)) == -1)
508 printf("[MOUSE] Couldn't enable scroll wheel events; is this mouse from the 1980s?\n");
510 printf("[MOUSE] Mouse didn't respond to normal PS/2 init; have you plugged a brick in by mistake?\n");
514 if (cfg->keyboard_file)
515 keyboard_fd = open(cfg->keyboard_file, O_RDONLY | O_NONBLOCK);
517 keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
519 if (keyboard_fd == -1) {
520 printf("Failed to open keyboard event source.\n");
523 if (cfg->mouse_autoconnect)
524 mouse_hook_enabled = 1;
526 if (cfg->keyboard_autoconnect)
531 signal(SIGINT, sigint_handler);
534 //goto skip_everything;
536 // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
538 printf("Enable 200MHz GPCLK0 on GPIO4\n");
539 gpio_enable_200mhz();
541 // reset cpld statemachine first
549 // reset amiga and statemachine
555 printf("Setting CPU type to %d.\n", cpu_type);
556 m68k_set_cpu_type(cpu_type);
560 m68k_set_reg(M68K_REG_PC, 0xF80002);
562 m68k_set_reg(M68K_REG_PC, 0x0);
565 ps_reset_state_machine();
570 printf("Setting CPU type to %d.\n", cpu_type);
571 m68k_set_cpu_type(cpu_type);
574 pthread_t ipl_tid, cpu_tid, kbd_tid;
576 err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
578 printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
580 pthread_setname_np(ipl_tid, "pistorm: ipl");
581 printf("IPL thread created successfully\n");
584 // create keyboard task
585 err = pthread_create(&kbd_tid, NULL, &keyboard_task, NULL);
587 printf("[ERROR] Cannot create keyboard thread: [%s]", strerror(err));
589 pthread_setname_np(kbd_tid, "pistorm: kbd");
590 printf("[MAIN] Keyboard thread created successfully\n");
594 err = pthread_create(&cpu_tid, NULL, &cpu_task, NULL);
596 printf("[ERROR] Cannot create CPU thread: [%s]", strerror(err));
598 pthread_setname_np(cpu_tid, "pistorm: cpu");
599 printf("[MAIN] CPU thread created successfully\n");
602 // wait for cpu task to end before closing up and finishing
603 pthread_join(cpu_tid, NULL);
604 printf("[MAIN] All threads appear to have concluded; ending process\n");
614 void cpu_pulse_reset(void) {
617 // printf("Status Reg%x\n",read_reg());
620 // printf("Status Reg%x\n",read_reg());
621 if (cfg->platform->handle_reset)
622 cfg->platform->handle_reset(cfg);
624 //m68k_write_memory_16(INTENA, 0x7FFF);
626 m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
627 m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
632 int cpu_irq_ack(int level) {
633 printf("cpu irq ack\n");
637 static unsigned int target = 0;
638 static uint8_t send_keypress = 0;
640 uint8_t cdtv_dmac_reg_idx_read();
641 void cdtv_dmac_reg_idx_write(uint8_t value);
642 uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
643 void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
645 #define PLATFORM_CHECK_READ(a) \
646 if (address >= cfg->custom_low && address < cfg->custom_high) { \
647 unsigned int target = 0; \
648 switch(cfg->platform->id) { \
649 case PLATFORM_AMIGA: { \
650 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
651 return handle_piscsi_read(address, a); \
653 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
654 return handle_pinet_read(address, a); \
656 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
657 return rtg_read((address & 0x0FFFFFFF), a); \
659 if (custom_read_amiga(cfg, address, &target, a) != -1) { \
668 if (ovl || (address >= cfg->mapped_low && address < cfg->mapped_high)) { \
669 if (handle_mapped_read(cfg, address, &target, a) != -1) \
673 unsigned int m68k_read_memory_8(unsigned int address) {
674 PLATFORM_CHECK_READ(OP_TYPE_BYTE);
676 /*if (address >= 0xE90000 && address < 0xF00000) {
677 printf("BYTE read from DMAC @%.8X:", address);
678 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE);
681 cpu_emulation_running = 0;
685 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
686 stop_cpu_emulation(1);
690 if (address & 0xFF000000)
693 unsigned char result = (unsigned int)read8((uint32_t)address);
695 if (mouse_hook_enabled) {
696 if (address == CIAAPRA) {
697 if (mouse_buttons & 0x01) {
698 //mouse_buttons -= 1;
699 return (unsigned int)(result ^ 0x40);
702 return (unsigned int)result;
706 if (kb_hook_enabled) {
707 if (address == CIAAICR) {
708 if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
713 if (send_keypress == 2) {
719 if (address == CIAADAT) {
720 //if (send_keypress) {
721 uint8_t c = 0, t = 0;
722 pop_queued_key(&c, &t);
724 result = ((c << 1) | t) ^ 0xFF;
735 unsigned int m68k_read_memory_16(unsigned int address) {
736 PLATFORM_CHECK_READ(OP_TYPE_WORD);
738 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
739 stop_cpu_emulation(1);
742 /*if (address >= 0xE90000 && address < 0xF00000) {
743 printf("WORD read from DMAC @%.8X:", address);
744 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD);
747 cpu_emulation_running = 0;
751 if (mouse_hook_enabled) {
752 if (address == JOY0DAT) {
753 // Forward mouse valueses to Amyga.
754 unsigned short result = (mouse_dy << 8) | (mouse_dx);
755 return (unsigned int)result;
757 /*if (address == CIAAPRA) {
758 unsigned short result = (unsigned int)read16((uint32_t)address);
759 if (mouse_buttons & 0x01) {
760 return (unsigned int)(result | 0x40);
763 return (unsigned int)result;
765 if (address == POTGOR) {
766 unsigned short result = (unsigned int)read16((uint32_t)address);
767 // bit 1 rmb, bit 2 mmb
768 if (mouse_buttons & 0x06) {
769 return (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10
770 & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8
772 return (unsigned int)(result & 0xfffd);
776 if (address & 0xFF000000)
779 if (address & 0x01) {
780 return ((read8(address) << 8) | read8(address + 1));
782 return (unsigned int)read16((uint32_t)address);
785 unsigned int m68k_read_memory_32(unsigned int address) {
786 PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
788 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
789 stop_cpu_emulation(1);
792 /*if (address >= 0xE90000 && address < 0xF00000) {
793 printf("LONGWORD read from DMAC @%.8X:", address);
794 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD);
797 cpu_emulation_running = 0;
801 if (address & 0xFF000000)
804 if (address & 0x01) {
805 uint32_t c = read8(address);
806 c |= (be16toh(read16(address+1)) << 8);
807 c |= (read8(address + 3) << 24);
810 uint16_t a = read16(address);
811 uint16_t b = read16(address + 2);
812 return (a << 16) | b;
815 #define PLATFORM_CHECK_WRITE(a) \
816 if (address >= cfg->custom_low && address < cfg->custom_high) { \
817 switch(cfg->platform->id) { \
818 case PLATFORM_AMIGA: { \
819 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
820 handle_piscsi_write(address, value, a); \
822 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
823 handle_pinet_write(address, value, a); \
825 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
826 rtg_write((address & 0x0FFFFFFF), value, a); \
829 if (custom_write_amiga(cfg, address, value, a) != -1) { \
838 if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
839 if (handle_mapped_write(cfg, address, value, a) != -1) \
843 void m68k_write_memory_8(unsigned int address, unsigned int value) {
844 PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
846 /*if (address >= 0xE90000 && address < 0xF00000) {
847 printf("BYTE write to DMAC @%.8X: %.2X\n", address, value);
848 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE);
850 cpu_emulation_running = 0;
854 if (address == 0xbfe001) {
855 if (ovl != (value & (1 << 0))) {
856 ovl = (value & (1 << 0));
857 printf("OVL:%x\n", ovl);
861 if (address & 0xFF000000)
864 write8((uint32_t)address, value);
868 void m68k_write_memory_16(unsigned int address, unsigned int value) {
869 PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
871 /*if (address >= 0xE90000 && address < 0xF00000) {
872 printf("WORD write to DMAC @%.8X: %.4X\n", address, value);
873 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD);
875 cpu_emulation_running = 0;
879 if (address == 0xDFF030) {
880 char *serdat = (char *)&value;
881 // SERDAT word. see amiga dev docs appendix a; upper byte is control codes, and bit 0 is always 1.
882 // ignore this upper byte as it's not viewable data, only display lower byte.
883 printf("%c", serdat[0]);
885 if (address == 0xDFF09A) {
886 if (!(value & 0x8000)) {
891 else if (value & 0x04) {
896 if (address & 0xFF000000)
900 printf("Unaligned WORD write!\n");
902 write16((uint32_t)address, value);
906 void m68k_write_memory_32(unsigned int address, unsigned int value) {
907 PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
909 /*if (address >= 0xE90000 && address < 0xF00000) {
910 printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value);
911 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD);
913 cpu_emulation_running = 0;
917 if (address & 0xFF000000)
921 printf("Unaligned LONGWORD write!\n");
923 write16(address, value >> 16);
924 write16(address + 2, value);